Is there a clear line between 1 Ton and 3/4 Ton?

We have a 2011 Ram 2500 CTD, GVWR is 9600 lbs. Today we went to a CAT Scale and weighed in at: GVW 7740 we are allowed 9600 leaving us 2160 lbs Front axle was 4580 lbs with a limit of 5500 Rear ax...